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diff --git a/src/lib/libcrypto/asn1/a_pkey.c b/src/lib/libcrypto/asn1/a_pkey.c
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1/* $OpenBSD: a_pkey.c,v 1.8 2024/04/09 13:52:41 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60
61#include <openssl/opensslconf.h>
62
63#include <openssl/asn1.h>
64#include <openssl/bn.h>
65#include <openssl/err.h>
66#include <openssl/evp.h>
67#include <openssl/objects.h>
68#include <openssl/x509.h>
69
70#include "asn1_local.h"
71#include "evp_local.h"
72
73EVP_PKEY *
74d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp, long length)
75{
76 const unsigned char *p = *pp;
77 EVP_PKEY *ret;
78
79 if ((a == NULL) || (*a == NULL)) {
80 if ((ret = EVP_PKEY_new()) == NULL) {
81 ASN1error(ERR_R_EVP_LIB);
82 return (NULL);
83 }
84 } else {
85 ret = *a;
86 }
87
88 if (!EVP_PKEY_set_type(ret, type)) {
89 ASN1error(ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
90 goto err;
91 }
92
93 if (!ret->ameth->old_priv_decode ||
94 !ret->ameth->old_priv_decode(ret, pp, length)) {
95 if (ret->ameth->priv_decode) {
96 PKCS8_PRIV_KEY_INFO *p8 = NULL;
97 *pp = p; /* XXX */
98 p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, pp, length);
99 if (!p8)
100 goto err;
101 EVP_PKEY_free(ret);
102 ret = EVP_PKCS82PKEY(p8);
103 PKCS8_PRIV_KEY_INFO_free(p8);
104 } else {
105 ASN1error(ERR_R_ASN1_LIB);
106 goto err;
107 }
108 }
109 if (a != NULL)
110 (*a) = ret;
111 return (ret);
112
113 err:
114 if (a == NULL || *a != ret)
115 EVP_PKEY_free(ret);
116 return (NULL);
117}
118LCRYPTO_ALIAS(d2i_PrivateKey);
119
120int
121i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp)
122{
123 if (a->ameth && a->ameth->old_priv_encode) {
124 return a->ameth->old_priv_encode(a, pp);
125 }
126 if (a->ameth && a->ameth->priv_encode) {
127 PKCS8_PRIV_KEY_INFO *p8 = EVP_PKEY2PKCS8(a);
128 int ret = i2d_PKCS8_PRIV_KEY_INFO(p8, pp);
129 PKCS8_PRIV_KEY_INFO_free(p8);
130 return ret;
131 }
132 ASN1error(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
133 return (-1);
134}
135LCRYPTO_ALIAS(i2d_PrivateKey);
136
137/* This works like d2i_PrivateKey() except it automatically works out the type */
138
139EVP_PKEY *
140d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp, long length)
141{
142 STACK_OF(ASN1_TYPE) *inkey;
143 const unsigned char *p;
144 int keytype;
145
146 p = *pp;
147 /* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE):
148 * by analyzing it we can determine the passed structure: this
149 * assumes the input is surrounded by an ASN1 SEQUENCE.
150 */
151 inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, length);
152 /* Since we only need to discern "traditional format" RSA and DSA
153 * keys we can just count the elements.
154 */
155 if (sk_ASN1_TYPE_num(inkey) == 6)
156 keytype = EVP_PKEY_DSA;
157 else if (sk_ASN1_TYPE_num(inkey) == 4)
158 keytype = EVP_PKEY_EC;
159 else if (sk_ASN1_TYPE_num(inkey) == 3) {
160 /* This seems to be PKCS8, not traditional format */
161 PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(
162 NULL, pp, length);
163 EVP_PKEY *ret;
164
165 sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
166 if (!p8) {
167 ASN1error(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
168 return NULL;
169 }
170 ret = EVP_PKCS82PKEY(p8);
171 PKCS8_PRIV_KEY_INFO_free(p8);
172 if (a) {
173 *a = ret;
174 }
175 return ret;
176 } else
177 keytype = EVP_PKEY_RSA;
178 sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
179 return d2i_PrivateKey(keytype, a, pp, length);
180}
181LCRYPTO_ALIAS(d2i_AutoPrivateKey);
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